Please make the following amendments to the abstract. Material to be inserted in replacement paragraphs or sections is in bold and underline, and material to be deleted is in and/or in if the deletion would be difficult to see.

Please replace abstract with the following rewritten abstract: A water muffler of a personal watercraft comprises: a muffler body; and an inlet pipe which is connected to the muffler body and guides an exhaust gas and cooling water to an inner space of the muffler body. The inlet pipe includes: a center pipe wall; an outer pipe wall provided to surround the center pipe wall; an exhaust passage which is provided inside the center pipe wall; and a water passage surrounded by the center pipe wall and the outer pipe. The center pipe wall has in a downstream end portion of the inlet pipe, a protruding portion protruding from the outer pipe wall in an axial direction of the inlet pipe, and an outlet of the water passage is located to be apart from an outlet of the exhaust passage in an axial direction of the inlet pipe.

A stand-up type personal watercraft comprises: a body including a hull and a deck; a standing deck is provided in a rear portion of the deck; an engine hood attached to the deck and located in front of the standing deck; a pole storage section formed as a recess on an outer upper surface of the engine hood and extending in a forward and rearward direction; a handle pole which is rotatably attached at a front end portion thereof to the deck, and is pivotable between a stowed position at which the handle pole is stowed in the pole storage section, and an up position at which a rear end portion of the handle pole is placed above and away from the pole storage section; and a storage provided in the engine hood by depressing a portion of an upper surface of the pole storage section.

A transmission is for a marine propulsion device having an internal combustion engine that drives a propulsor for propelling a marine vessel in water. An input shaft is driven into rotation by the engine. An output shaft drives the propulsor into rotation. A forward planetary gearset that connects the input shaft to the output shaft so as to drive the output shaft into forward rotation. A reverse planetary gearset that connects the input shaft to the output shaft so as to drive the output shaft into reverse rotation. A forward brake engages the forward planetary gearset in a forward gear wherein the forward planetary gearset drives the output shaft into the forward rotation. A reverse brake engages the reverse planetary gearset in a reverse gear wherein the reverse planetary gearset drives the output shaft into the reverse rotation.

A transmission is for a marine propulsion device having an internal combustion engine that drives a propulsor for propelling a marine vessel in water. An input shaft is driven into rotation by the engine. An output shaft drives the propulsor into rotation. A forward planetary gearset that connects the input shaft to the output shaft so as to drive the output shaft into forward rotation. A reverse planetary gearset that connects the input shaft to the output shaft so as to drive the output shaft into reverse rotation. A forward brake engages the forward planetary gearset in a forward gear wherein the forward planetary gearset drives the output shaft into the forward rotation. A reverse brake engages the reverse planetary gearset in a reverse gear wherein the reverse planetary gearset drives the output shaft into the reverse rotation.

A blade channel of a turbomachine that is delimited in the circumferential direction of the turbomachine by a pressure side of an airfoil and by an opposite suction side of an adjacent airfoil that, in the radial direction of the turbomachine, is delimited by two opposing side walls, and whose extent in the axial direction of the turbomachine is delimited by leading edges and by trailing edges of airfoils; at least one of the side walls being provided with localized contours, of which at least two are formed as elevations and at least two as depressions; a saddle surface being formed between the contours that, in one rotation, alternately merges into an elevation and a depression; a blade cascade having such blade channels, as well as a turbomachine having such a blade cascade.

A blade channel of a turbomachine that is delimited in the circumferential direction of the turbomachine by a pressure side of an airfoil and by an opposite suction side of an adjacent airfoil that, in the radial direction of the turbomachine, is delimited by two opposing side walls, and whose extent in the axial direction of the turbomachine is delimited by leading edges and by trailing edges of airfoils; at least one of the side walls being provided with localized contours, of which at least two are formed as elevations and at least two as depressions; a saddle surface being formed between the contours that, in one rotation, alternately merges into an elevation and a depression; a blade cascade having such blade channels, as well as a turbomachine having such a blade cascade.

A personal watercraft comprises a body including a deck and a hull, the body being provided with an engine room; an engine disposed in the engine room; a maintenance opening provided in the deck and located above the engine to in such a manner that an outside region of the body is in communication with an interior of the engine room through the maintenance opening; at least one duct mounting hole provided in the deck at a location different from a location of the maintenance opening in such a manner that the outside region is in communication with the interior of the engine room through the duct mounting hole; at least one ventilation duct fitted to the duct mounting hole to guide air from the outside region to the engine room; and an engine hood covering the maintenance opening and an air inlet of the ventilation duct.

An operating gas system for an underwater vehicle, particularly for a submarine or an unmanned underwater vehicle, includes a fuel cell system and an operating gas vessel connected in terms of flow to the fuel cell system. In order to achieve simple and efficient storage of boil-off gasses, a gas-receiving device is also provided and is connected to the operating gas vessel. The gas-receiving device contains a sorbent for receiving boil-off gas from the operating gas vessel. The boil-off gas, which is produced in the operating vessel with an operating gas for the fuel cell system and which cannot be consumed directly in the fuel cell reaction, is therefore collected and stored with the aid of the sorbent in the gas-receiving device. A method for operating an operating gas system and an underwater vehicle are also provided.

An operating gas system for an underwater vehicle, particularly for a submarine or an unmanned underwater vehicle, includes a fuel cell system and an operating gas vessel connected in terms of flow to the fuel cell system. In order to achieve simple and efficient storage of boil-off gasses, a gas-receiving device is also provided and is connected to the operating gas vessel. The gas-receiving device contains a sorbent for receiving boil-off gas from the operating gas vessel. The boil-off gas, which is produced in the operating vessel with an operating gas for the fuel cell system and which cannot be consumed directly in the fuel cell reaction, is therefore collected and stored with the aid of the sorbent in the gas-receiving device. A method for operating an operating gas system and an underwater vehicle are also provided.

Marine engine includes a cylinder block having first and second banks of cylinders that are disposed along a longitudinal axis and extend transversely with respect to each other in a V-shape so as to define a valley therebetween. A catalyst receptacle is disposed at least partially in the valley and contains at least one catalyst that treats exhaust gas from the marine engine. A conduit conveys the exhaust gas from the marine engine to the catalyst receptacle. The conduit receives the exhaust gas from the first and second banks of cylinders and conveys the exhaust gas to the catalyst receptacle. The conduit reverses direction only once with respect to the longitudinal axis.